Rotary engine.



P. KILTZ. ROTARY ENGINE. I APPLICATION I'IL'BD NOV. 28, 1910.

' Patented ma 16,1911.

UNITED STATES PATENT OFFICE.

PETER KILTZ, OF RICH HILL, MISSOURI, ASSIGNOR TO JAMES A. PARSLEY ANDMICHAEL A. DOOLEY, BOTH OF CARY STATION, ILLINOIS.

ROTARY ENGINE.

To all whom it may concern:

Be it known that I, PETER KIL'rz, a citizen of the United States,residing at Rich Hill, in the county of Bates and State of Missouri,have invented certain new and useful Improvements in Rotary Engines, ofwhich the following is a specification.

This invention relates to that type of rotary engines characterized by aswinging abutment which is placed in operative position by the steampressure, and which is periodically retracted to permit the piston topass, the piston being a disk having radial wings which are shaped toact as cams for the purpose of swinging the abutment out of the way topermit said wings to pass the same.

It is the object of the invention to provide a rotary engine of the kindstated which will give the greatest amount of power with the leastexpenditure of steam, will run with the least possible friction and itsconsequent wear and noise, and will be sure, reliable and strong, andmay be easily regulated for the greatest range of work, provision being.

made to regulate to a fine degree the induction and cut-off of steam.

With these objects in View, my invention consists in the improvedconstruction, arrangement and combination of parts hereinafter fullydescribed and afterward specifically pointed out in the claim.

In order that others skilled in the art to which my invention appertainsmay be able to make and use the same, I will proceed to describe theconstruction and operation thereof, reference being made to theaccompanying drawings, in which Figure 1 is a central, vertical,longitudinal sectional view of the engine. Fig. 2 is a central,vertical, transverse sectional view thereof, on the plane indicated bythe broken line 4-4 of Fig. 1. Fig. 3 is a detailperspective Viewshowing one of the swinging abutment-s detached from the engine; andFig. 4 is a detail perspective View, showing one of the rotary valvesfor regulating the admission of steam into the cylinder.

Referring specifically to the drawings, 7 is the main body or casing ofthe engine, generally cast, and provided at its base with suitable feet8, through which it may be secured to the floor by bolts 9. Within thecasing is formed a circular cavity occupying the greater portion of thebody and form- Specification of Letters Patent.

App1ication filed November 28, 1910.

Patented May 16, 1911.

Serial No. 594,572.

ing the cylinder, in which operates the rotary piston comprising acentral wheel or disk 10, which carries on its outer edge or peripherythree tooth like extensions or wings 11, 12, 13, against which the steampressure is expended.

An induction port 1 1 is formed at the top of the casing and contains avalve 15, by means of which the steam may be caused to flow througheither-or both of two branch induction channels, 16, 17, the formerleading to the left to an induction port 18, and the latter to the rightto a similar port 19. In each of these channels is formed a valve seatin which is mounted a valve to regulate the flow of steam, the'valve onthe right being marked 20 and that on the left 21. Adjacent to each ofthese valves is a swinging abutment to alternately be held open by thesteam in the cylinder, and be closed over its induction port by theaction of the rear faces of the piston wings, the left hand abutmentbeing marked 22 and the right hand one 23. The plugs of these valvesproject through the casing and are provided at their ends with gearwheels 24, 25, engaging on opposite sides a central gear wheel 26, onthe projected shaft 27, of the piston 10.

Exhaust or eduction ports are provided at 28, 29, in communication witha channel 30 which leads out of the casing at 31.

The piston, as well as all joints, will be packed steam-tight in anysuitable manner.

The piston wings 11, 12, 13, are, as before stated, tooth-shaped, eachpresenting one face directly across the steam space between theperiphery of the disk 10, the wall of the cylinder, and another facecurved and gradually inclined outward from its root atthe periphery ofdisk 10 to the cylinder wall. The piston wings are spaced apartuniformly, and travel with their points in contact with the cylinderwall.

The abutments 22, 23, are mounted to swing into and out of the path ofthe piston wings, and to alternately close the steam space between theperiphery of the disk and the cylinder wall, and to close the adjacentinduction ports, and they are each provided with a straight face whichassumes a substantially radial position with relation to the cylinder,and moves from that to a seat prepared for it immediately in front ofthe induction port. Its opposite face is curved in the arc of thecylinder wall, and in one position, when the induction port is open, itis in line with and forms part of said wall.

The valve 15 has a port of suflicient width to permit the entering steamto flow through both branch induction channels, when desired, and it canbe turned by means of a hand wheel 32 (see Fig. 4), so that steam willpass through both of said channels. lVhen doing heavy work, I propose touse the valve wide open, with steam entering both channels, but withlight work, one will be suflicient, and the amount admitted to this onecan be accurately regulated.

The valves 20 and 21 are cut-off valves and are so arranged that whenone is open the other is closed.

The operation of my engine may be described as follows: Supposing thevalve 15 to be wide open, as in Fig. 3, steam will be admitted throughthe induction port 1 1, and will distribute itself in the channels 16and 17. It will be noticed that in the position illustrated, the valve21 is closed and the valve 20 open, while the induction port 18 is alsoclosed by the abutment 22, and the abutment 23 is projected radiallyinto the cylinder. The steam will now pass into the cylinder through thevalve 20, and being unable to escape in one direction by reason of theobstruction caused by the abutment 23, its force will be exerted againstthe radial face of the piston wing 13 which will cause the rotation ofthe piston and the shaft 27 by which it is carried. By the time thepiston wing 13 has passed the exhaust port 28, and that section of thecylinder steam is exhausted, the piston wing 11 will have passed theinduction port 18 and the valve 21 will have been rotated sufficientlyto admit steam thereto. This steam passing through the valve 21 and port18 will force the abutment 22 away from the port and into itsobstructive position across the steam passage. In the meantime theforward curved face of the piston Wing 12 will have pressed upon thecurved face of the abutment 23 and have forced it into a position inwhich its straight face will close the induction port 19 and its curvedface have become part of the cylinder wall, the valve 20 in the meantimehaving been closed. The steam entering between the abutment 22 andpiston wing 11, will force the piston forward and the operationsdescribed will be repeated, thus continuously rotating the disk 10 andthe shaft 27, the motion of which latter may be communicated to anydesired shaft or machinery through the medium of belting leading from apulley 33 secured to the shaft 27.

The advantages of my invention will be apparent from the foregoingdescription. The abutments 22 and 23 are easily removable forreplacement or repair by taking off one face of the casing. The valvescan all be readily removed in the same way, and all the parts arearranged and timed so as to cause the least possible friction, andprevent back lash or lost motion of any kind.

I claim:

In a rotary engine, a cylinder provided with an inlet, diametricallyopposite admission ports, and branch channels leading from the inlet tothe admission ports, the wall of the cylinder also having recesses intowhich the admission ports open, a cutoff valve in each channel, swingingabutments working in the aforesaid recesses and controlling theadmission ports, a rotary piston working in the cylinder, said pistonhaving wings successively engaging the abut- -ments and swinging thesame into the recesses to close the admission ports, said abutmentsbeing swung out of the recesses by the steam pressure as the pistonwings clear the abutments, and a valve in the inlet adapted to place thesame in communication with either one or both of the aforesaid channels.

In testimony whereof I afiix my signature in presence of two witnesses.

PETER KILTZ. Witnesses WESLEY BADGETT, J. H. Rnronn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

